115
CDUS43 KLOT 182240
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
440 PM CST MON DEC 18 2023
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 18 2023
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2023
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 36 1:05 AM 62 1877 36 0 21
MINIMUM 27 3:59 PM -11 1983 24 3 14
AVERAGE 32 30 2 18
PRECIPITATION (IN)
TODAY T 1.41 2002 0.06 -0.06 T
MONTH TO DATE 1.71 1.28 0.43 2.07
SINCE DEC 1 1.71 1.28 0.43 2.07
SINCE JAN 1 32.47 37.03 -4.56 31.90
SNOWFALL (IN)
TODAY T 6.7 1929 0.3 -0.3 T
MONTH TO DATE 0.3 4.1 -3.8 1.9
SINCE DEC 1 0.3 4.1 -3.8 1.9
SINCE JUL 1 3.0 6.1 -3.1 3.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 33 35 -2 47
MONTH TO DATE 467 590 -123 544
SINCE DEC 1 467 590 -123 544
SINCE JUL 1 1431 1741 -310 1609
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1145 1003 142 1174
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 17.7
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
LIGHT SNOW
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85 12:00 AM
LOWEST 48 12:00 PM
AVERAGE 67
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 36 64 1877
MINIMUM TEMPERATURE (F) 24 -14 1983
SUNRISE AND SUNSET
DECEMBER 18 2023......SUNRISE 7:14 AM CST SUNSET 4:22 PM CST
DECEMBER 19 2023......SUNRISE 7:15 AM CST SUNSET 4:22 PM CST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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